The rate of photosynthesis of a plant increases as the temperature increases from 10 ∘C10\ ^\circ\text{C}10 ∘C to 25 ∘C25\ ^\circ\text{C}25 ∘C. Which statement explains this?
Enzyme and substrate molecules move faster and collide more often.
Enzymes change shape so substrates fit into the active sites better.
Chlorophyll absorbs more light energy as the leaf gets warmer.
Carbon dioxide dissolves better in the warmer water inside the leaf.
117 exam-style questions on OCR GCSE Biology 1.4 Photosynthesis, covering 1.4.1 Photosynthesisers as biomass producers, 1.4.2 Factors affecting the rate of photosynthesis, and 1.4.3 Limiting factors in photosynthesis. Each one has a worked solution and a mark scheme showing where the marks go.